1. Department of Cellular Biochemistry, Max Planck Institute of Biochemistry (MPIB); Martinsried Germany
2. Adolf Butenandt Institute, Ludwig-Maximilians-Universität München; Munich Germany
3. Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry (MPIB); Martinsried Germany
4. Anatomical Institute, Ludwig-Maximilians-Universität München; Munich Germany
5. Department of Cell Biology and Institute of Biomembranes, University Medical Centre Utrecht; Utrecht The Netherlands